1695673897 has 2 divisors, whose sum is σ = 1695673898. Its totient is φ = 1695673896.

The previous prime is 1695673879. The next prime is 1695673907. The reversal of 1695673897 is 7983765961.

Together with previous prime (1695673879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1673546281 + 22127616 = 40909^2 + 4704^2 .

It is a cyclic number.

It is not a de Polignac number, because 1695673897 - 2¹⁹ = 1695149609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1695676897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 847836948 + 847836949.

It is an arithmetic number, because the mean of its divisors is an integer number (847836949).

Almost surely, 2^1695673897 is an apocalyptic number.

It is an amenable number.

1695673897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1695673897 is an equidigital number, since it uses as much as digits as its factorization.

1695673897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 61.

The square root of 1695673897 is about 41178.5611331916. The cubic root of 1695673897 is about 1192.4699532854.

The spelling of 1695673897 in words is "one billion, six hundred ninety-five million, six hundred seventy-three thousand, eight hundred ninety-seven".